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2 Sheets-Sheet 1.

L. 0. COLVIN. 00W MILKING MACHINE.

Patented Feb. 18,-1 868.

1n: NORRIS PETERS ca, wxsnmcmlv, v. c.

2 Sheets-Sheet- 2.

L. 0. OOLVIN. DOW MILKING MACHINE.

Patented Feb. 18, 1868.

040:0 o'oko III- Z ,4 K a /j '7 nu: mamas PETERS 50., WASHINGTON, by c.

gums gluten {intent @ffitti Lima Patent No. 74.507. dated February is, 1868.

IMPROVEMENTYIN GOW-MILKIN G MAUHIilBRY.

fill Stlgtlmle numb in in time Enters 32mm in making part if the same.

TO ALL WHOM IT MAY CONOERN:' Beit ltnown that I. L 0. CDLVIN', 'ot' tlie city, county, and Stateof New, York, have invented certain new sud useful Improvements in Cow-Milking Machinery and I do hereby declare that the following is a full, cienr. end exact description of the same, reference being had to'the-necemponying drawings, inn-king a portion ofthis specification, in whichp t s Figure 1 is an elevation of coav-milking mechanism constructed and operated uccording to my invention.

Figure 2 is overtical section of the same, taken in a line at right angles to fig. 1. i

Similar letters of reference indicate c.orrcsponding.parts in both figures.

'ljhc object of thisinvention is to providemeans' whereby the operation of milking may be carridrin nith greotent'aodlity and quickness than has hitherto been found practicable. i

The invention consists in giving the mum, when in use, a; vertical movement, in close imitation of the hunting? of the calf, whereby its efiiciency in withdrawing the milk from the udder is materially increased, and, furthermore, in it novel means whereby this movement of the milker may be prdduced.

The invention also consists in certain novel roeans of operating themillter, of securing the proper adjustment of the same when npplied to use, of insuring the rapid passage or movement of the cows from the apps-i fetus when the milking-operation is completed, and ofpreventingany denngement of the milking-dcviccs"fi'om the vaporization of the liquid employed as a" medium for the transmission of power t6 the milher in the opera-. tion ofthe same, the object mentioned being, by these means, very efi'ectuallyseoured.

To enable others ,to understand theooonstruction end operation of my intention, I will proceed to.deseribe itwith reference to the drawings; i I i A represents an upright framework, lurnished with horizontal guide-rods, a, on which work laterally-moving gates or 'stanchionm B, which are held at-s comparatively short distance apart, to confine or. holrlhe ween them the neckof the cow, by means of a latch, 6, attached to one of the said gates, and catching into a. loop or staple, c, secured upon the other. The laltch b has nttached to it a cord, (1, by. pulling which the gates are dis ,con'nected, so as to bevdraw n apart, through the agency of weights 0, attached to cords c, which, ppssi'n g over pulleys), have their oppesite extremities attached to the gates Situated in. any suitable position upon the framework A is n-pump, I preferably of the-variety known as diaphragm-pumps. The said pump D is connected with the milker, indicated at E, by a. tube, I, and acts upon the fluid with which the said tube is filled, to operate the milker, the construction of which, end the manner of working the some by the motion of the aforesaid fluid, are substantially thesame as set forth in the patent of 0. COLVIK, bearing dote May 22, 1867.

The tube F is made preferably of metal, with one or more flexible joints, 9, which may he formed of short pieces of rubber, or other. like tubing, interposed between and attached to the metallic sections of the aforesaid tube, the object of the flexible joints just mentioned being to enable the milker to be conveniently handed and brought into proper relation with the udder of the cow in afiixing the some thereto The free extremit f the, latter is,-furthermore, provided with a universal joint, 71, whereby it is connected with the milker, the letter being, by this means, enabled to be adjusted in any desired position upon the aforesaid extremity of the tube.

The rod 1' of the pump is connected with one arm of a bent lcverpl, from oneextr'emity of which is extended a cord, 1:, the saidcord passing over pulleys, n m, and, having its opposite end attached to a. suitable support,

,is looped through a pulley, n, the sheave of which is connect-ed with the thbe F of the milker, so that, a \fibrating movement being communicated to the bent lever by a pitman or other suitable menus, connected with the upright a r'm thereof, a. rising and falling movement, simultaneous with the operatiou'of the pump' D, will. be communicated to the tube F, and, consequently, to the millc'er, the object of which-will he herein presently fully set forth.

The extent of the 'motion communicated to the bent lever may be reguloted by ad us'ting the pitman, or equivalent device, at n greater or less distance from the axis or pivot thereof, bymesns of a liding or adjustable box, r, fitted into the upright arm of the said lever.

Smnn at} is nu upright tube, in the upper end of which is fitted a valve, opening outward, and constitoting, as it were, a. ssfety-vnlve, which-permits the escape of vapors evolved from the fluid in the tube F and pump D, 'which, if not thus got rid of, might interfere with the proper working ofthe apparatus. p

In using theappnrotus', th'e' gate's 'are brought apart, as hereinbefore explained, fur enough to permit the cow to be placed with her neck between them, and are then brought toward each other, and connected by the latch b, so 'asto confine the conwb'y the neck, and thn's insure her retention in place, whereupon the millzcrjs applied to theteats of the cow, in the manner set forth in the potent hereinbefore mentioned, which being done,

the bent lever I is operctod'to worlc the pump, and thus operate tbe milker tmpump or drsw'the milk from the udder, simultaneous with which the up-and-don'n movement of the millrer, produced by the 'sction of the cord I5, cs hcreinb'efore sot forth, causes the milk'er to be forced npvrsrd at intervals, withinoreased pressure, against the udder, the said pressing movement closely resembling the-bunting" movementof the calf in sucking, and materielly facilitating the action of the milkor in drawing the milk from the udder; When the milking-operation has been continued for a suitable length of time, or, in other words, is completed, the milker is detached from the teats, and, the gates being again broughtapurt, the .cow is permitted to pass between them away from the apparatus, .thus allowing another to be immediately driven to her place tobo milkedin the some manner, so that, by these means, '11 number ol' cows may be rapidly mil kedin 'the ssme manner-fin succession, by a single milker. Furthermore, when it is desired to operate several 'milkers simultsneouslxthe upright arms of their severn'l bent levers, I, may be connected by suitable rods, in such manner that the movement of one will be communicated to the others, 1 single driving-pitmcn being thus s'uflicient to operate them all.

Whntl claim asmy invention, and desire to secure lay Letters Patent, is.'- I i v p 1. So operating the milker that the some msy-h'ave e vertic'nl or bunti,ng" movement, substantially as and for the purpose specified I p 1 2. The pulley n sndcord k, in combination with the tube F- of the milker end the bent lever I, subst'nntinlly as and for the pnrpose specifi'ed.

purpose specified.

4. The gates or stnnchions 15,10 constructed and operoting ns to secure the cow whilst being milked, and to admit of her passage between them when liberated, substantially as set forth 5. An escape-valve, arranged in relstion with the-pump D and the tube F of the milker, substantially no and for the purpose specified.

3. The bent lover I, in combination with the pump D,,opernting' the 'niillrer, substn-ntihlly us'nnd for the 6. The universal joint I], arranged in eombinstion w rjthvthe milkor, and the tube F thereof. substantially as and for the ur ose s ecified.

, p p p L. '0. colivm. Witnesses:

J. W. Coons, A. La Cmmc 

